Summary of Financial Statement Effect of Derivative Financial Instruments Designated as Interest Rate Cash Flow Hedges (Detail) (Cash Flow Hedging, USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Oct. 27, 2012		Oct. 27, 2012
Interest Rate Swap
Derivative Instruments And Hedging Activities [Line Items]
Amount of Gain or (Loss) Recognized in OCI on Derivative (Effective Portion)	$ (153)		$ 375
Interest Expense
Derivative Instruments And Hedging Activities [Line Items]
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	$ (1,896)	[1],[2]	$ (2,620)	[1],[2]

[1] Represents reclassification of amounts from accumulated other comprehensive income (loss) into earnings as interest expense was recognized on the former term loan. No ineffectiveness was associated with the interest rate cash flow hedge.

[2] Includes a reclassification amount of $1,784 from accumulated other comprehensive loss into interest expense resulting from the termination of the swap.